Gallia County, Ohio

county in Ohio, United States

Gallia County (pronunciation: GAL-yuh) is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 29,220.[2] Its county seat is Gallipolis.[3]

Gallia County
Courthouse in Gallipolis
Courthouse in Gallipolis
Official seal of Gallia County
Map of Ohio highlighting Gallia County
Location within the U.S. state of Ohio
Map of the United States highlighting Ohio
Ohio's location within the U.S.
Coordinates: 38°50′N 82°19′W / 38.83°N 82.32°W / 38.83; -82.32
Country United States
State Ohio
FoundedMarch 25, 1803[1]
Named forthe Latin name for France
Largest villageGallipolis
 • Total471 sq mi (1,220 km2)
 • Land467 sq mi (1,210 km2)
 • Water4.7 sq mi (12 km2)  1.0%
 • Total29,220
 • Density62/sq mi (24/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district2nd


  1. "Ohio County Profiles: Gallia County" (PDF). Ohio Department of Development. Archived from the original (PDF) on June 21, 2007. Retrieved April 28, 2007.
  2. "QuickFacts: Gallia County, Ohio". United States Census Bureau. Retrieved January 18, 2024.
  3. National Association of Counties. "NACo County Explorer". Retrieved January 18, 2024.